import { computed, reactive, h } from "vue"
import { JVxeTableMethods, JVxeTableProps } from "/@/components/jeecg/JVxeTable/src/types"
import { isEmpty } from "/@/utils/is"
import { Pagination } from "ant-design-vue"

export function usePagination(props: JVxeTableProps, methods: JVxeTableMethods) {
  const innerPagination = reactive({
    current: 1,
    pageSize: 10,
    pageSizeOptions: ["10", "20", "30"],
    showTotal: (total, range) => {
      return range[0] + "-" + range[1] + " 共 " + total + " 条"
    },
    showQuickJumper: true,
    showSizeChanger: true,
    total: 100,
  })

  const bindProps = computed(() => {
    return {
      ...innerPagination,
      ...props.pagination,
      size: props.size === "tiny" ? "small" : "",
    }
  })

  const boxClass = computed(() => {
    return {
      "j-vxe-pagination": true,
      "show-quick-jumper": !!bindProps.value.showQuickJumper,
    }
  })

  function handleChange(current, pageSize) {
    innerPagination.current = current
    methods.trigger("pageChange", { current, pageSize })
  }

  function handleShowSizeChange(current, pageSize) {
    innerPagination.pageSize = pageSize
    methods.trigger("pageChange", { current, pageSize })
  }

  /** 渲染分页器 */
  function renderPagination() {
    if (props.pagination && !isEmpty(props.pagination)) {
      return h(
        "div",
        {
          class: boxClass.value,
        },
        [
          h(Pagination, {
            ...bindProps.value,
            disabled: props.disabled,
            onChange: handleChange,
            onShowSizeChange: handleShowSizeChange,
          }),
        ]
      )
    }
    return null
  }

  return { renderPagination }
}
